Phenoloxidase and peroxidase activities in Sphagnum-dominated peatland in a warming climate - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Soil Biology and Biochemistry Année : 2012

Phenoloxidase and peroxidase activities in Sphagnum-dominated peatland in a warming climate

Résumé

Peatlands still suffer from the scarcity of available data about the characterization and the response to climate forcing of the main oxidative enzymes that occur over the seasons. In the present study, phenoloxidase and peroxidase activities were examined in Sphagnum lawns along a narrow fen-bog gradient under experimental elevated temperatures. We showed that peroxidase activities from Sphagnum mosses were 1000-fold higher than those of phenoloxidases irrespective of seasons and sampling areas. Peroxidase activities increased (+30%) with the rise of air temperatures (an average of 1 °C), while warming did not alter phenoloxidase activities. These results suggest that the monitoring of peroxidase activities in peatlands may represent a suitable and forward indicator of the impact of climate warming on carbon cycle in peatlands.
Fichier principal
Vignette du fichier
Jassey_et_al_SBB6041.R2.pdf (201.5 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-00682547 , version 1 (26-03-2012)

Identifiants

  • HAL Id : hal-00682547 , version 1

Citer

Vincent E. J. Jassey, Geneviève Chiapusio, Daniel Gilbert, Marie-Laure Toussaint, Philippe Binet. Phenoloxidase and peroxidase activities in Sphagnum-dominated peatland in a warming climate. Soil Biology and Biochemistry, 2012, 46, pp.49-52. ⟨hal-00682547⟩
171 Consultations
733 Téléchargements

Partager

Gmail Facebook X LinkedIn More